INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '8ef21be1c1be701c4024282af38f41f012e854bd9cb3cfb36950f7e720a1fd6b', 
    'iMGk8KPkBROJtII5jB+PRiw6EtfhrJZvHQ4NHSLmm+o=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00028

Result

int(1)