UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6JdexDLuBUltEzBhyG2oixdj3xFUf1IYO38FPkGi58I=' 
WHERE 
  key_id = '50ca079cf553f91b812b28afc49931104769901c26070a5a84ee75734cadd776' 
  AND (
    token = '6JdexDLuBUltEzBhyG2oixdj3xFUf1IYO38FPkGi58I=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )