SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    21551, 21552, 21553, 21554, 21555, 21556, 
    21557, 21558, 21559, 21560, 21561, 
    21562, 21563, 21564, 21565, 21566
  ) 
  OR sale_product_id IN (
    21551, 21552, 21553, 21554, 21555, 21556, 
    21557, 21558, 21559, 21560, 21561, 
    21562, 21563, 21564, 21565, 21566
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "read_sorted_file": {
      "filesort": {
        "sort_key": "cscart_mb_salvage_cases.updated_at desc, cscart_mb_salvage_cases.case_id desc",
        "table": {
          "table_name": "cscart_mb_salvage_cases",
          "access_type": "ALL",
          "rows": 58,
          "filtered": 100,
          "attached_condition": "cscart_mb_salvage_cases.auction_product_id in (21551,21552,21553,21554,21555,21556,21557,21558,21559,21560,21561,21562,21563,21564,21565,21566) or cscart_mb_salvage_cases.sale_product_id in (21551,21552,21553,21554,21555,21556,21557,21558,21559,21560,21561,21562,21563,21564,21565,21566)"
        }
      }
    }
  }
}