UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '4BusrEmndicq5qEVXMhUt+ehH68cpeVDh9XwWWVlKrY=' 
WHERE 
  key_id = '21a6e11b6903ecbe161ac1de2185c02d922889bf743e3cfd561870827af57619' 
  AND (
    token = '4BusrEmndicq5qEVXMhUt+ehH68cpeVDh9XwWWVlKrY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )