UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MPb59TS8xCjidCG8nqF2hjqdrolChl2kUXC/epgZlYo=' 
WHERE 
  key_id = '0e20e2ae7afe06326739c9be171d45e3041ace0ae30e5b395f1475d28d160c94' 
  AND (
    token = 'MPb59TS8xCjidCG8nqF2hjqdrolChl2kUXC/epgZlYo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )