Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53d226cb73ca6dfdb66fc67bd77c8cbdf04fd037b57f94997b4c8b699aed4aaf' 
  AND token = 'zbMNO7pgTGit91iqRVw567a46EjQrMi7Ox6mpmiVTmI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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