INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '375a88749b4d2b4d9d00bf4e348c840470760d1449223947d50e58d113533fb1', 
    'dxLhMZxW8ztwfhLeed1rh2i4TDcUSf3t9IGOnEV/X48=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00026

Result

int(1)