UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MZm8SQOq1wht72g6pXb7+UV+j9VXP7EaJ2+QcCuusVE=' 
WHERE 
  key_id = '519843aaceba0a1c76baae1c1cd7c77e51be6c06bb2ecc6253f03d31b626fd99' 
  AND (
    token = 'MZm8SQOq1wht72g6pXb7+UV+j9VXP7EaJ2+QcCuusVE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )