Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de7383759803dd0212f175bf5235660a08a3e889d0c3fc09ddafb353dd9504af' 
  AND token = '1iNTS3kx4GrtZe6n0v8DRAeSeJ7M3vHBdpOeqjuKFYc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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