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SELECT 
  company_descriptions.*, 
  companies.*, 
  cscart_vendor_plan_descriptions.plan, 
  cscart_seo_names.name as seo_name, 
  cscart_seo_names.path as seo_path, 
  CAST(
    AVG(`prd`.`average_rating`) AS DECIMAL(10, 2)
  ) AS average_rating, 
  prd.reviews_count product_reviews_count 
FROM 
  cscart_companies AS companies 
  LEFT JOIN cscart_company_descriptions AS company_descriptions ON company_descriptions.company_id = companies.company_id 
  AND company_descriptions.lang_code = 'en' 
  LEFT JOIN cscart_vendor_plan_descriptions ON companies.plan_id = cscart_vendor_plan_descriptions.plan_id 
  AND cscart_vendor_plan_descriptions.lang_code = 'en' 
  LEFT JOIN cscart_seo_names ON cscart_seo_names.object_id = 303 
  AND cscart_seo_names.type = 'm' 
  AND cscart_seo_names.dispatch = '' 
  AND cscart_seo_names.lang_code = 'en' 
  LEFT JOIN cscart_products p ON p.company_id = companies.company_id 
  LEFT JOIN cscart_product_review_prepared_data prd ON p.product_id = prd.product_id 
WHERE 
  companies.company_id = 303

Query time 0.02558

JSON explain

{
  "query_block": {
    "select_id": 1,
    "const_condition": "1",
    "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": "company_descriptions",
          "access_type": "const",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "10",
          "used_key_parts": ["company_id", "lang_code"],
          "ref": ["const", "const"],
          "rows": 1,
          "filtered": 100
        }
      },
      {
        "table": {
          "table_name": "cscart_vendor_plan_descriptions",
          "access_type": "const",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "10",
          "used_key_parts": ["plan_id", "lang_code"],
          "ref": ["const", "const"],
          "rows": 1,
          "filtered": 100
        }
      },
      {
        "table": {
          "table_name": "cscart_seo_names",
          "access_type": "ref",
          "possible_keys": ["PRIMARY", "dispatch"],
          "key": "PRIMARY",
          "key_length": "206",
          "used_key_parts": ["object_id", "type", "dispatch", "lang_code"],
          "ref": ["const", "const", "const", "const"],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "trigcond(cscart_seo_names.`type` = 'm' and cscart_seo_names.dispatch = '' and cscart_seo_names.lang_code = 'en')"
        }
      },
      {
        "block-nl-join": {
          "table": {
            "table_name": "p",
            "access_type": "ALL",
            "rows": 25270,
            "filtered": 100,
            "attached_condition": "p.company_id = 303"
          },
          "buffer_type": "flat",
          "buffer_size": "18Kb",
          "join_type": "BNL",
          "attached_condition": "trigcond(p.company_id = 303)"
        }
      },
      {
        "table": {
          "table_name": "prd",
          "access_type": "ref",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "ref": ["dev_db.p.product_id"],
          "rows": 562,
          "filtered": 100,
          "attached_condition": "trigcond(trigcond(p.product_id is not null))"
        }
      }
    ]
  }
}

Result

company_id	lang_code	company_description	terms	status	company	company_search	address	city	city_id	district_id	ward_id	state	country	zipcode	email	phone	url	storefront	secure_storefront	entry_page	redirect_customer	countries_list	timestamp	shippings	logos	request_user_id	request_account_name	request_account_data	tax_number	pre_moderation	pre_moderation_edit	pre_moderation_edit_vendors	plan_id	suspend_date	grace_period_start	last_time_suspended	last_debt_notification_time	paypal_commerce_platform_account_id	stripe_connect_account_id	stripe_connect_account_type	sended_email_notify	ghn_shop_id	verify	show_homepage	messenger	messenger_flag	plan	seo_name	seo_path	average_rating	product_reviews_count
303	vi	<p>Monsieur Luxe by We Food is an organic brand from Vietnam that provides plant-based food that is good for health, is eco-friendly and full of nutrients.</p> <p>Monsieur Luxe’s products are designed to help add vital nutrients and energy through products that are completely natural. At Monsieur Luxe they believe that Only by changing daily eating habits, one can achieve a healthier mind and body, contributing to a better world.</p> <p>Monsieur Luxe products are produced in a closed production with high technology that is of HACCP standard. Some of the nuts and dried fruits are imported from farms in America and Australia, ensuring the quality of the ingredients.</p>		A	MONSIEUR LUXE - Wefood	MONSIEUR LUXE - Wefood	121 Hoàng Quốc Việt, phường Phú Thuận, Quận 7, Thành phố Hồ Chí Minh		79	778	27484				Sales2.wf@wefoodjsc.com	0967 195 500				none	Y		1639698726	6,4		0				N	N	N	1	0	0	0	0				0	5127704	N	N	A	Y	Standard	monsieur-luxe-wefood-en		4.96	14