Yes, it is highly probable that it will be shuttered like Sony Le Plex HD after less than 3 years of operation. The beginning of the end was in 2018, its first year, when it did not premiere Sanju, Stree, Badhaai Ho, etc. (compared to 2017 where every film was premiered). Today it is completely a ghost channel with no activity of any kind which even Sony Le Plex HD was not. That channel’s social media pages were active for a long time (including the removal of Sony channels from Tata Sky in late 2018) and it along with Sony Rox HD got the axe suddenly.
Soon Zee will also realise that niche channels are unviable and even if it does not pull the plug on &xplor HD it will make drastic changes to the channel in some form, as it is carried by only Airtel and Fastway unlike SGS which is present on several platforms.