SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    440401, 442346, 442410, 411995, 448121, 
    446606, 410648, 459676, 447385, 428816, 
    406245, 426043
  )

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.0216566,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "loops": 1,
          "rows": 12,
          "cost": 0.0216566,
          "filtered": 100,
          "attached_condition": "cscart_products.product_id in (440401,442346,442410,411995,448121,446606,410648,459676,447385,428816,406245,426043)"
        }
      }
    ]
  }
}