Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dbc54a800ba1088a05594c47ed6a57e1a138039513e797f2bc901cb60c82214a' 
  AND token = 'TUSENywmDC5j4L9wiwtK5IzYRYmq3CtBUj/g1cPVaHM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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