SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    452275, 425655, 405329, 408400, 405508, 
    420092, 436320, 409425, 437741, 417942, 
    439367, 409696
  )

Query time 0.00056

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 (452275,425655,405329,408400,405508,420092,436320,409425,437741,417942,439367,409696)"
        }
      }
    ]
  }
}