UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'VjE6iPj5TIaALmhpzNqXa5vrAaCMqfG1x8UBkVcH++0=' 
WHERE 
  key_id = 'd81f6a001ced7fb540ca0835dc4a7e2ee8838c67e670e705df9904f06dbd59fd' 
  AND (
    token = 'VjE6iPj5TIaALmhpzNqXa5vrAaCMqfG1x8UBkVcH++0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )