Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f7476c140e68f89fb15ec6d0581c8cf7a8ec96e4baaa49b378a9ddbb0264f32' 
  AND token = '3Lt54aA5D94rX5zAeLV6hDgZi2oFzTMYZSuj2LsN0Mc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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