Midfielder Mekki and 12-goal striker Hylton have both returned to training after groin and knee injuries respectively but were not fit enough for Saturday's 2-1 defeat at Wycombe.
Defender Troy Brown made his long-awaited return from a knee injury as an unused substitute at Adams Park and he will be hoping for greater involvement.
Boss Andy Scott has no new injury problems but remains without long-term absentee Aaron Morris (cruciate ligament damage).
The Shots currently prop up the League Two table, three points from safety with three matches remaining.
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