Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61b997a1ab06eb7e2f9b5988814e7ddd9600d6de244415a553fdd94476bec7a4' 
  AND token = '5be97yNNpo2XyYNtzSj5lSrU38C89+fQ9buLPVkLNH0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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