SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    436654, 458480, 403102, 432285, 403973, 
    442807, 440814, 407763, 441694, 412081, 
    434268, 426164
  )

Query time 0.00042

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 (436654,458480,403102,432285,403973,442807,440814,407763,441694,412081,434268,426164)"
        }
      }
    ]
  }
}