SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    404060, 455720, 420563, 416787, 428711, 
    460118, 458461, 403343, 405043, 402986, 
    417129, 414508
  )

Query time 0.00054

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 (404060,455720,420563,416787,428711,460118,458461,403343,405043,402986,417129,414508)"
        }
      }
    ]
  }
}