SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e5c531af26cad6cd7df984852a9f2c04d0ab13fd244811569381e4fa46f1979f' 
  AND token = 'nh1fzV/XdgkXDEfIaDdnjrFSotnZV1pAUdxtYyJzeBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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