INSERT INTO reference_rate (moneda_id, date, rate)
SELECT 2, TIMESTAMPADD (DAY, 1, r1.date), r1.rate
FROM reference_rate r1
LEFT JOIN reference_rate r2
ON TIMESTAMPADD(DAY, 1, r1.date) = r2.date
WHERE r2.date IS NULL AND r1.date < TIMESTAMPADD (DAY, -2, CURDATE())