Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c4abae6af8640cc617c80184a26f81643377dcc43108db5cac66f6755863e6a3' 
  AND token = 'AtO/sgv682uaH7VOU5duadgc/MsB2hqNLQ7V+CfjHVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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