UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'dGj8JYAnUXjWLeau1eXoTRBVH0ogQyjOADysUXn1gGQ=' 
WHERE 
  key_id = '303c24503df3b719636d14580f2503d2a21a741ee213f790c8e799d72a469afd' 
  AND (
    token = 'dGj8JYAnUXjWLeau1eXoTRBVH0ogQyjOADysUXn1gGQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )