UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PbsN7zmhr09i9fKboc4tSVsynziJ/RQ+v8m0PSOsCbM=' 
WHERE 
  key_id = '515d196aa1338e996e62341b66e166e5d8d6dd946edbdc2c4cb2116e65308ed1' 
  AND (
    token = 'PbsN7zmhr09i9fKboc4tSVsynziJ/RQ+v8m0PSOsCbM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00027