INSERT INTO cscart_multi_declock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '55c1b59fa9beece64a0b7d6b2552db63d7c3e8a1c9b83318834022b82c3b721c', 
    '6SJl0IIxHwiyFJrgpbPYfKLpRDViuMD66nSzU65QBdY=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00059

Result

int(1)