Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8fc34f6670b703aa4f2d963b45a16f3da07c8fd7df956a4e9d1d410bc594949e' 
  AND token = 'TUTZsnYDgyyyOEeebh4N6S3XfqKoNUuiAthFGAycdWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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