UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ZaxXc7iLugpCZjn92YwR56IqqlxCZ3sBWkxidCT7+Rs=' 
WHERE 
  key_id = '50cff12757843f363fc855767474993c43c5ee6fdbd6da9621009d3df0941507' 
  AND (
    token = 'ZaxXc7iLugpCZjn92YwR56IqqlxCZ3sBWkxidCT7+Rs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )