Revelation 20:4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.
Are we now in that thousand years and has Satan been chained and have no control on earth or is that still to come?
yes. Satan was bound at the cross for a 1,000 years ( mataphoric language that represents the time from the cross to shortly before the end of the world )
Satan will be loosed for a little while right before the end. With the falling away we are seeing from the Church, i think we are in that period currently.
Jesus will be returning shortly.