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SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  descr1.product as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id, 
  cscart_product_review_prepared_data.average_rating average_rating, 
  cscart_product_review_prepared_data.reviews_count product_reviews_count 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'vi' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  LEFT JOIN cscart_product_review_prepared_data ON cscart_product_review_prepared_data.product_id = products.product_id 
  AND cscart_product_review_prepared_data.storefront_id = 0 
  LEFT JOIN cscart_product_popularity as popularity ON popularity.product_id = products.product_id 
WHERE 
  1 
  AND companies.status IN ('A') 
  AND products.company_id = 366 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND products.company_id = 366 
  AND products.parent_product_id = 0 
GROUP BY 
  products.product_id 
ORDER BY 
  popularity.total desc, 
  products.product_id ASC 
LIMIT 
  0, 6

Query time 0.17534

JSON explain

{
  "query_block": {
    "select_id": 1,
    "filesort": {
      "sort_key": "popularity.total desc, products.product_id",
      "temporary_table": {
        "nested_loop": [
          {
            "table": {
              "table_name": "companies",
              "access_type": "const",
              "possible_keys": ["PRIMARY"],
              "key": "PRIMARY",
              "key_length": "4",
              "used_key_parts": ["company_id"],
              "ref": ["const"],
              "rows": 1,
              "filtered": 100
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "index_merge",
              "possible_keys": ["PRIMARY", "status", "idx_parent_product_id"],
              "key_length": "4,3",
              "index_merge": {
                "intersect": [
                  {
                    "range": {
                      "key": "idx_parent_product_id",
                      "used_key_parts": ["parent_product_id"]
                    }
                  },
                  {
                    "range": {
                      "key": "status",
                      "used_key_parts": ["status"]
                    }
                  }
                ]
              },
              "rows": 4689,
              "filtered": 100,
              "attached_condition": "products.company_id = 366 and products.parent_product_id = 0 and (products.usergroup_ids = '' or find_in_set(0,products.usergroup_ids) or find_in_set(1,products.usergroup_ids)) and products.`status` = 'A'"
            }
          },
          {
            "table": {
              "table_name": "descr1",
              "access_type": "eq_ref",
              "possible_keys": ["PRIMARY", "product_id"],
              "key": "PRIMARY",
              "key_length": "11",
              "used_key_parts": ["product_id", "lang_code"],
              "ref": ["dev_db.products.product_id", "const"],
              "rows": 1,
              "filtered": 100,
              "attached_condition": "trigcond(descr1.lang_code = 'vi')"
            }
          },
          {
            "table": {
              "table_name": "cscart_product_review_prepared_data",
              "access_type": "eq_ref",
              "possible_keys": ["PRIMARY"],
              "key": "PRIMARY",
              "key_length": "7",
              "used_key_parts": ["product_id", "storefront_id"],
              "ref": ["dev_db.products.product_id", "const"],
              "rows": 1,
              "filtered": 100
            }
          },
          {
            "table": {
              "table_name": "popularity",
              "access_type": "eq_ref",
              "possible_keys": ["PRIMARY", "total"],
              "key": "PRIMARY",
              "key_length": "3",
              "used_key_parts": ["product_id"],
              "ref": ["dev_db.products.product_id"],
              "rows": 1,
              "filtered": 100
            }
          },
          {
            "table": {
              "table_name": "prices",
              "access_type": "ref",
              "possible_keys": [
                "usergroup",
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "key": "product_id",
              "key_length": "3",
              "used_key_parts": ["product_id"],
              "ref": ["dev_db.products.product_id"],
              "rows": 1,
              "filtered": 99.9960556,
              "attached_condition": "prices.lower_limit = 1 and prices.usergroup_id in (0,0,1)"
            }
          }
        ]
      }
    }
  }
}

Result

product_id	product	company_name	product_type	average_rating	product_reviews_count
4038	Kỳ Lân Len Nhồi Bông Lục Lạc, Thú Bông Bằng Vải, Gấu Bông Unicorn, Kỳ Lân Len Màu Hồng, Quà Tặng Cho Bé	The Little Swing	P	5.00	2
4047	Lười Len Nhồi Bông Lục Lạc, Đồ Chơi Cho Bé, Đồ Chơi Lục Lạc, Thú Bông Có Lục Lạc, Gấu Ôm Cho Bé, Đồ Chơi Bằng Len	The Little Swing	P	5.00	2
4045	Album Ảnh Thủ Công Sư Tử (Scrapbook), Nét Đẹp Cổ Điển, Sổ Trang Trí Thủ Công, Bìa Dày Dặn, Dùng Lưu Giữ Hình Ảnh, Kỷ Niệm	The Little Swing	P	5.00	2
4043	Sư Tử Len Nhồi Bông Lục Lạc, Thú Bông Lục Lạc, Thú Nhồi Bông Móc Len, Đồ Chơi Bằng Len Handmade, Thú Bông Cho Bé	The Little Swing	P	5.00	1
4040	Gấu Len Nhồi Bông Lục Lạc, Thú Nhồi Bông Cho Bé, Gấu Len Cotton Mềm, Thú Bông Đeo Lục Lạc, Đồ Chơi Bằng Len Handmade	The Little Swing	P	5.00	1
4041	Heo Len Nhồi Bông Lục Lạc, Đồ Chơi Bằng Len Mềm, Thú Bông Heo Đeo Chuông, Lợn Nhồi Bông, Đồ Chơi Móc Len Handmade	The Little Swing	P	5.00	1