Shambulah,
Why say it is not this or not that if you do not provide your reasons? It certainly does not help people to determine if you know what you are talking about. My attitude is if you are unable to give a reason then you probably don’t know. If you are simply unwilling to give your reasons then don’t post, as it a requirement of this forum.
My first impression when I saw the photo was that the snake was dead. I have had a better look at it now and see nothing to change my mind. It looks to me to have been exposed to intense heat and partially cooked, to the point where the scales are starting to lift off the fleshy parts and buckling on top of the skull. But I may be wrong...
It is not a Keelback as it lacks a loreal scale and the jaw line is straight (no ‘smile’ as mentioned by Triimeresurus). The arrangement of the scales on the side of the head are consistent with a Rough-scaled Snake and I think heat affected the heads sheilds over the cranium, because they appear a real mess. From what I can see and given a specimen with body scales appearing like that naturally would have to come from overseas and there would still be some unexplained differences, I reckon you have a somewhat mangled Rough-scaled Snake.
A ventral shot may well have helped.
Blue