Matthew 6’s prayer and Matthew 4’s announcement use the same clock: the reign is arriving in that generation.
“Your kingdom come” in the mouth of first hearers is not a request to delay the reign. It is alignment with a reign already at the door.
Seek first the kingdom sits next to daily bread. That is present-tense life under a King, not a waiting-room ethic.
When the rival administration fell in AD 70, the nearness John and Jesus preached had become public fact.
You seek a kingdom that has come near and stayed.