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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 = 249 
  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 = 249

Query time 0.02484

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": 25286,
            "filtered": 100,
            "attached_condition": "p.company_id = 249"
          },
          "buffer_type": "flat",
          "buffer_size": "18Kb",
          "join_type": "BNL",
          "attached_condition": "trigcond(p.company_id = 249)"
        }
      },
      {
        "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
249	vi	<p>As the pace of life becomes more and more hectic, we tend to use what is most convenient. Therefore, many people often use one-use products such as plastic cups, plastic cup handles, plastic bags, styrofoam boxes,... Without knowing that, those disposable products are putting pressure on plastic waste on the Earth. Moreover, single-use plastic products also have a significant impact on human health.</p> <p>Recognizing this, TAN Cupholder was born. The brand specializes in providing 100% handmade fabric bags and cup handles. TAN Cupholder not only focuses on features and reusability but is also very interested in the aesthetics of the product. Therefore, TAN Cupholders products are both creative and artistic.</p> <p>The brand hopes that its small actions will help the environment and make a better future for people and the Earth. You can do it with TAN Cupholder right now, with a minor change of habits by choosing their eco-friendly product line.</p>		A	TAN Cupholder	TAN Cupholder	10 Cao Văn Lầu, P1, Q6, TP HCM		79	775	27370				tan.cupholder@gmail.com	0775993611				none	Y		1627937813	5,6,4,7		0				N	N	N	1	0	0	0	0				0	4145260	N	N	A	Y	Standard	tan-cupholder-en		4.96	2