Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac05d87f34c83d86c23544aab0570107b973979d760bebe66454cc91d7754fbb' 
  AND token = 'SZIWg2F0l6f39oK//kkamnPTwlLKylZ1P/n24IB1CyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}