SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (295, 288, 290, 285)

Query time 0.00070

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "ALL",
      "possible_keys": ["PRIMARY"],
      "rows": 12,
      "filtered": 33.333,
      "attached_condition": "(cscart_products.product_id in (295,288,290,285))"
    }
  }
}

Result

product_id product_code product_type status company_id list_price amount weight length width height shipping_freight low_avail_limit timestamp updated_timestamp usergroup_ids is_edp edp_shipping unlimited_download tracking free_shipping zero_price_action is_pbp is_op is_oper is_returnable return_period avail_since out_of_stock_actions localization min_qty max_qty qty_step list_qty_count tax_ids age_verification age_limit options_type exceptions_type details_layout shipping_params facebook_obj_type parent_product_id buy_now_url
285 CAP2007SIL P A 1 0.00 1 0.000 0 0 0 0.00 0 1592304540 1592305034 0 N N N B N R Y N N Y 10 0 N 0 0 0 0 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0
288 6G1ZM84745L496326 P A 1 0.00 1 0.000 0 0 0 0.00 0 1600310098 1600310098 0 N N N B N R Y N N Y 10 0 N 0 0 0 0 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0
290 KL3DA26UJCB037344 P A 1 0.00 1 0.000 0 0 0 0.00 0 1600585957 1600586152 0 N N N B N R Y N N Y 10 0 N 0 0 0 0 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0
295 JAATFR17HN7102296 P A 1 0.00 1 0.000 0 0 0 0.00 0 1600939505 1651201054 0 N N N B N R Y N N Y 10 0 N 0 0 0 0 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} activity 0