Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96c729adbf7cc4048ba4a93f65025dd408e886365ded997f1034a7ff2fd8cf1c' 
  AND token = 'lfTWDlDdeFVytSdRQCANWLv0F8HcbqMm0Wk3u80o8/M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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