30yr lockin is too far in future.
Practically, goodbye to the money.
What if we move out of India? I am not even sure I will have a career or be employable till I am 60. If we become unemployable at say 40, 45, 60, what is the use of that NPS corpus?
Its better to provide for yourself for next 5y then 10y and so on, and if you have taken care for next 10-15y, then you can start contributing meaningfully to NPS. Else keep contributing the minimum 500-1000Rs annually.
You can still withdraw if your total Contribution is less than 5L, I think.