SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0ac42e549aab533a6876e31abbc7af7922f9c38465d1dfef9ff649ef324ebdea' 
  AND token = '/Cmhjr/G9gr+LlRCAcbw2ZndfD8JlK/K6JMZn5Z3l3E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}