I gave it a shot. My best guess after looking pretty hard is that it is a modern American creation without meaning, except for the one who made it perhaps.
I did find similar names, that may have inspired it or be related to it somehow, can't say. Maybe following up one of these can lead you to a better clue. Good luck.
Micaiah - (Hebrew) form of
Micah (spoken aloud w/out the last
syllable "-ah" sounds like Mekhi)
Macaio - (Hawaiian) form of
Michael (ditto aloud)
Mekhail - (Greek, Russian) form of
MichaelMicah - (Hebrew) form of
MichaelMeka - (Hawaiian) eyes
Makyah - (Hopi) eagle hunter
Mahkah - (Lakota) earth
McKay -(Scottish) son of
KayMaco - (Hungarian) form of
EmmanuelMakin - (Arabic) strong
Maicu - (Quechua) eagle
Maiqui - (Quechua) tree
Mahi'ai - (Hawaiian) form of
GeorgeMaake - (Polynesian) warrior
Malik - (Punjab) lord, master; (Arabic) form of
MalachiMalachi - (Hebrew) angel of God
Melchior - (Hebrew) king
Melquiades - (Hebrew)
Yahweh is my God
Mordecai - (Hebrew) martial, warlike