INSERT INTO cscart_multi_declock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '28eb4b0d9a7b03309b6188787051cf7bffbf736ee6c9eb22e3b37c00a1da43de', 
    'EnDR55SQKzjoymC//AQGfElYPJZt/WUjEh2RkIeAudQ=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00025

Result

int(1)