Look at the bright side. At least it arrived!
I don't think it's registered.
I think 'premium' shipping is for goods that worth more than $50, although I'm not entirely sure.
When I was ordering the following graphics card; premium shipping option was there:
https://bit.ly/2B2QaY4
In any case; since the toy car you're willing to import only costs $3.5, I think it's best to order it via standard shipping and save your cash!
I don't think custom officials would waste their 'precious' time on a sub 500 rupee toy! They'd rather waste it on expensive stuff such as the 2GB vRAM graphics card I ordered!
So... Take a leap of faith!