SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '9ed045c0299996509f108a51aedde5865f3f3537f3490e2163f560f796308bb5' 
  AND token = '4rqU/sIBz5Cesw/rj7Aw+rdtaFk6jhw52lI9RRWgnVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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