Hindu monuments very likely existed then, but they have not survived, Potentially mainly because they weren't built of stone. Several visuals of recognizable Hindu deities and votive pillars have survived from about a hundred bce to 200 ce. Hindu temple building started in earnest with the fifth century ce in https://hanumanmandiradelaide.com.au/hanuman-mandir-adelaide-a-spiritual-sanctuary-in-south-australia/