UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '+pbW+sLnMDohtf5QqPv0kCUq8go5Gp/PCYi2E5HL9ok=' 
WHERE 
  key_id = '6e12bf27984c9abe0654c6915761fb681c3af5432b6043e5ae5aca2607e501e0' 
  AND (
    token = '+pbW+sLnMDohtf5QqPv0kCUq8go5Gp/PCYi2E5HL9ok=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )