UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'v+6aXKftD+Y34/e5QgakZ31T3+KkSpobkz6NQe5kuVY=' 
WHERE 
  key_id = '279e313fa01d2104581400f7f16657e44b3385195921a40fb1ed541212740e3f' 
  AND (
    token = 'v+6aXKftD+Y34/e5QgakZ31T3+KkSpobkz6NQe5kuVY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )