Well if the Kingdom of God is within us, then the passages were fulfilled.
Maybe for John or the Gospel of Thomas, but certainly not for Matthew, which has a very robust eschatological expectation of a future judgment. God's kingdom could be said to be "near" for those who experience God's power (cf. Matthew 12:28) or live according to God's will (cf. 5:10, 18:4), and the keys to the kingdom were given to Peter and/or the apostles (16:19), but this does not mean that there would not be a future time when the Son of Man would come enthroned in his kingdom to execute judgment on the earth. This expectation of a coming Day of Judgment and the heavenly revealing of the Son of Man resounds all throughout the gospel (cf. 8:11-12, 10:15, 23, 11:20-24, 12:39-45, 13:35-50, 16:27-28, 19:28, 24:27-34, 36-51, 25:1-46, 26:64). A good example of this is the interpretation of the Parable of the Wheat and Tares (13:24-30, 35-43). The kingdom of heaven is compared to the planting of wheat in a field, which is interpreted as the growth of the Christian community in the world. Interspersed among them are the "tares" planted by the Devil. This describes the contemporary situation in the church. Then, "at the end of the age, ... the Son of Man will send out his angels and they will weed out of his kingdom everything that causes sin and all who evil" (v. 41). Thus, even though the kingdom is present in the church, there will still have to be the "harvest" of Judgment Day, during which the angels will throw the wicked "into the fiery furnace where there will be weeping and gnashing of teeth" (v. 42). The existence of the church and its role in gathering the chosen into the kingdom does not preclude any future judgment expected to occur when the Son of Man comes. Matthew repeatedly claims that a future judgment will occur, tho no one knows when it will occur.