insert do tabulky az taky problem nebude. skor to citanie. urobi zrejme table lock a uz mas problem.
ak pouzijes napriklad MyISAM engine, tak sa tomu vyhnes. pripadne urobis citanie bez zamknutia (co ma aj druhu stranku a to, ze budes citat aj necommitnute data).

SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED ;
SELECT * FROM TABLE_NAME ;
COMMIT ;