UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'U+6cB4m4Lj3oe9QoyOfjHNYs3AK9CFnQy/n5GqHmFts=' 
WHERE 
  key_id = '4d8956b642d4b359db03ef223b7ad1570f31b30d848a2b99ec538c08030f9a58' 
  AND (
    token = 'U+6cB4m4Lj3oe9QoyOfjHNYs3AK9CFnQy/n5GqHmFts=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )