SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    406336, 455410, 458998, 417702, 434266, 
    402632, 403587, 450242, 427198, 448492, 
    425648, 452408
  )

Query time 0.00046

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 (406336,455410,458998,417702,434266,402632,403587,450242,427198,448492,425648,452408)"
        }
      }
    ]
  }
}