SELECT * FROM cscart_sg_ai_videos WHERE product_id = 401876  ORDER BY created_at DESC

Query is invalid

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.00345856,
    "nested_loop": [
      {
        "read_sorted_file": {
          "filesort": {
            "sort_key": "cscart_sg_ai_videos.created_at desc",
            "table": {
              "table_name": "cscart_sg_ai_videos",
              "access_type": "ref",
              "possible_keys": ["idx_product"],
              "key": "idx_product",
              "key_length": "4",
              "used_key_parts": ["product_id"],
              "ref": ["const"],
              "loops": 1,
              "rows": 1,
              "cost": 0.00345856,
              "filtered": 100,
              "attached_condition": "cscart_sg_ai_videos.product_id <=> 401876"
            }
          }
        }
      }
    ]
  }
}