SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (7, 6, 5, 4, 3, 2, 1)

Query time 0.00058

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "ALL",
      "possible_keys": [
        "PRIMARY"
      ],
      "rows": 7,
      "filtered": 100,
      "attached_condition": "(`_testcscart`.`cscart_products`.`product_id` in (7,6,5,4,3,2,1))"
    }
  }
}

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 parent_product_id
1 P A 1 0.00 999 50.000 0 0 0 -4500.00 0 1602130892 1608618735 0 N N N B N R N 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;} 0
2 P A 1 0.00 1 0.000 0 0 0 0.00 0 1602468051 1602729653 0 N N N B N R N 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;} 0
3 111111111111 P A 1 0.00 1 0.000 0 0 0 0.00 0 1602484972 1608618039 0 N N N B N R N 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;} 0
4 P A 1 0.00 999997 0.000 0 0 0 0.00 0 1602485043 1603438462 0 N N N B N R N 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;} 0
5 P A 1 0.00 1 0.000 0 0 0 0.00 0 1602636297 1602651093 0 N N N B N R N N N Y 10 0 N 0 0 0 0 7 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;} 0
6 1111111111 P A 1 0.00 99999 0.000 0 0 0 0.00 0 1602738889 1603332391 0 N N N B N R N 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;} 0
7 1111111111111 P A 1 22222.00 999998 0.000 0 0 0 0.00 0 1603202381 1708931838 0 N N N B N R N 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;} 0