Can capacitor operate under voltage exceeding its "Maximum Working Voltage"?
A maximum rating isn't a promise the part will fail if the rating is exceeded, it's just a lack of promise the part won't fail.

However, some capacitors actually require de-rating below their nominal working voltage specs if they're used at any kind of elevated temperature or with significant ripple currents. And the ratings on parts from random Alibaba sellers are likely to be more optimistic than ones from established Western or Japanese manufacturers.

But even if these are high quality parts, operating them at more than 2x its rating is likely to lead to failure very quickly.