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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 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'tr' 
  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 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
WHERE 
  1 
  AND cscart_categories.category_id IN (
    564, 749, 750, 751, 752, 753, 754, 755, 
    756, 757, 758, 759, 760, 761, 762, 763, 
    764, 765, 766, 767, 768, 769, 770, 771, 
    772, 773, 774, 775, 776, 777, 778, 779, 
    780, 781, 782, 783, 784, 785
  ) 
  AND companies.status IN ('A') 
  AND products.company_id IN (3, 4) 
  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.parent_product_id = 0 
  AND products.product_type != 'D' 
GROUP BY 
  products.product_id 
ORDER BY 
  product asc, 
  products.product_id ASC 
LIMIT 
  0, 12

Query time 0.00174

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	products_categories	index	PRIMARY,pt	PRIMARY	6		29	Using where; Using index; Using temporary; Using filesort
1	SIMPLE	products	eq_ref	PRIMARY,status,idx_parent_product_id	PRIMARY	3	hobilifedt.products_categories.product_id	1	Using where
1	SIMPLE	descr1	eq_ref	PRIMARY,product_id	PRIMARY	9	hobilifedt.products_categories.product_id,const	1	Using where
1	SIMPLE	prices	ref	usergroup,product_id,lower_limit,usergroup_id	usergroup	3	hobilifedt.products_categories.product_id	1	Using where; Using index
1	SIMPLE	companies	eq_ref	PRIMARY	PRIMARY	4	hobilifedt.products.company_id	1	Using where
1	SIMPLE	cscart_categories	eq_ref	PRIMARY,c_status,p_category_id	PRIMARY	3	hobilifedt.products_categories.category_id	1	Using where