UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PIsVzp5bSur1oNtSEr89EJvBq2UbeMhBud668BnepHs=' 
WHERE 
  key_id = '76b0e5c29ef3ee0a1a87a99e5bba781f3b7241600c176079eefb73316411a426' 
  AND (
    token = 'PIsVzp5bSur1oNtSEr89EJvBq2UbeMhBud668BnepHs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )