INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '6e21c3148244518c20a7ddc1d9a2b18079e9e5f75dec6a8f9205674dee67318f', 
    '2/pk70jWtcwnK1aHT5gRGqb8KSQCvolQR4jiojSQUzI=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00038

Result

int(1)