SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    19789, 19790, 19791, 19792, 19793, 19794, 
    19795, 19796, 19797, 19798, 19799, 
    19800, 19801, 19802, 19803, 19804
  ) 
  OR sale_product_id IN (
    19789, 19790, 19791, 19792, 19793, 19794, 
    19795, 19796, 19797, 19798, 19799, 
    19800, 19801, 19802, 19803, 19804
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00031

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": 56,
          "filtered": 100,
          "attached_condition": "cscart_mb_salvage_cases.auction_product_id in (19789,19790,19791,19792,19793,19794,19795,19796,19797,19798,19799,19800,19801,19802,19803,19804) or cscart_mb_salvage_cases.sale_product_id in (19789,19790,19791,19792,19793,19794,19795,19796,19797,19798,19799,19800,19801,19802,19803,19804)"
        }
      }
    }
  }
}