Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc77041b59a9c16db256d0335d0782c332f26acb01dd1d1672116c48cbd46730' 
  AND token = 'NAlSY1lwdqrfUcDSRptZquqDhrT+YoQWhsx7gJ1AuCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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