UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'N2vmLjv9LkTswoHcEbtlqfvwExSg9t3WlzxhCnlCj+U=' 
WHERE 
  key_id = '6b683f0fa537e37ef16f29d5df8895a2ffdb185993f12784bde889402adfcc45' 
  AND (
    token = 'N2vmLjv9LkTswoHcEbtlqfvwExSg9t3WlzxhCnlCj+U=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )