SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '701be34557c4db94cd2ca341ef14db15fe14889c6f14f76603ce502e714ec94c' 
  AND token = 'XuUPLJ4+T0UVFZ3LG04+wss2ss+zbW6QlaBAHOquqlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}