INSERT INTO cscart_multi_declock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '21f3adbde8a10e48add0ec2506fef695cb02afdbe5142063fd7913465761f8b5', 
    's/RmerwP0hk7v8vLVfgkerwCK5iOBfJG9Fyt0XMhOW0=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00028

Result

int(1)