Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '05c8f1d808ee7dcd2bb57e30d4db64b8d05944e4f4daa23ba5a477bddf8a4e4b' 
  AND token = 'WdaixdFn0SMMJ/qEgNGKzEzVbd0shdDCk3JfzaSntgw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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