Script:
setInterval(function(){
  connection.query("SELECT * FROM channels", function(error, rows, response, fields) {
  if (!!error) {
    console.log('Error in Query!');
  } else {
    console.log(rows);
    for(var i in rows) {
      console.log(rows[i].channels);
      $.getJSON('https://api.twitch.tv/kraken/streams/'+rows[i].channels+'?client_id=p45q4rdi1fxlyfsmfi6whncz8ns6wq', function(channel) {
        if (channel["stream"] != null) {
          console.log(''+channel["stream"]["channel"]["display_name"]+' is ONLINE');
        } else {
          $.getJSON('https://api.twitch.tv/kraken/channels/'+rows[i].channels+'?client_id=p45q4rdi1fxlyfsmfi6whncz8ns6wq', function(channel) {
            console.log(''+channel["display_name"]+' is OFFLINE');
      })}})}}});
}, 5 * 1000);

CMD:
C:\Bot>node hm.js
[ RowDataPacket { channels: 'APVideo', status: 'offline', rechte: 'test' },
  RowDataPacket { channels: 'murphystv', status: 'offline', rechte: 'fine' },
  RowDataPacket { channels: 'schnottling', status: 'offline', rechte: 'fine' } ]

APVideo
murphystv
schnottling
Schnottling is OFFLINE
Schnottling is OFFLINE
Schnottling is OFFLINE
^C
C:\Bot>