UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'kuCXTnt1E1P8F/iypvDXyvoWWODw1MkLuQSs56YBYqk=' 
WHERE 
  key_id = '39640e0c8a009d0b9e83ee2406b0971646db73d8c17ded41d3c7f08d0eaf7786' 
  AND (
    token = 'kuCXTnt1E1P8F/iypvDXyvoWWODw1MkLuQSs56YBYqk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )