SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    408376, 428738, 437947, 424967, 428526, 
    419226, 429122, 448827, 451935, 424697, 
    405944, 430377
  )

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 (408376,428738,437947,424967,428526,419226,429122,448827,451935,424697,405944,430377)"
        }
      }
    ]
  }
}