SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    21663, 21664, 21665, 21666, 21667, 21668, 
    21669, 21670, 21671, 21672, 21673, 
    21674, 21675, 21676, 21677, 21678
  ) 
  OR sale_product_id IN (
    21663, 21664, 21665, 21666, 21667, 21668, 
    21669, 21670, 21671, 21672, 21673, 
    21674, 21675, 21676, 21677, 21678
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00028

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 (21663,21664,21665,21666,21667,21668,21669,21670,21671,21672,21673,21674,21675,21676,21677,21678) or cscart_mb_salvage_cases.sale_product_id in (21663,21664,21665,21666,21667,21668,21669,21670,21671,21672,21673,21674,21675,21676,21677,21678)"
        }
      }
    }
  }
}