Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4c4f037a8384e34001b066a5855345a607f918643387c756c558696da40110ed' 
  AND token = 'v4MuiWF8O5umlIneF70fCqKNm0CTcBiAuaeEN5sYxuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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