INSERT INTO cscart_multi_declock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '8e91c15c3960393515898699e6c4984acd004f32320d293810a9d9c828a805ec', 
    'pwQAxYW3saDgFgIQWN9rqiili2QmrVfj54KS4Ag9zhc=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00030

Result

int(1)