UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'x/z2qjDaLgB8lWVSo1gACnrhRj6sOxhyGSA2MjluOmU=' 
WHERE 
  key_id = '50fcf207f82c20642c37d146003caec3c2fe59471f01adaf471d410532738b21' 
  AND (
    token = 'x/z2qjDaLgB8lWVSo1gACnrhRj6sOxhyGSA2MjluOmU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )