INSERT INTO cscart_multi_declock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '5d8742f6facedae9f171c68bf5b41fe0c19ddbf4a793208625875364b0bcd01c', 
    'Z3gK/9sGweIvpJir501NGNzQb8flI5Vg8Kd334PaW5Q=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00027

Result

int(1)