INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '4821607829b5268729ee87a3b4f61f5662a6cedcad38811422161edfccde391d', 
    'aG2Z5qMNfxEb1+KAFfJunl1xuAOek6WhIgRADaf63TA=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00033

Result

int(1)