UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'rSJ0hgfplVBYALU6MAxC32Q4HrSakRUjRNdanMIaHxA=' 
WHERE 
  key_id = 'e3e42c44e29e2791e38a5de36cd5c780d55bddaff442a6a637d6d14071676e9a' 
  AND (
    token = 'rSJ0hgfplVBYALU6MAxC32Q4HrSakRUjRNdanMIaHxA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )

Query time 0.00027