Income upto 2.5L is not taxable (old regime) and 3L (new regime and from AY26-27 it will be 4L in new regime).
But Crypto income even if it is Rs.1 there is 30% Tax + 4% cess on that tax.
Income Tax won't call you to pay tax. In future they will check it and I know people who received tax demand notice after 10 years for meagre Rs.250 tax demand and with interest it increased to Rs.2960 also.