INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '16d35655443bfa20d5729db62d1f4987349f7298b194efd200d0b237b1fce23c', 
    't7hJq+JRihy1xIxTu744QDfVG5BdjbFvHOzK3bUcWeg=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00027

Result

int(1)