Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '580ddb2e353e61919af432360c37172ab1b3ced24b71e6d8aa4b49b3aaf8a434' 
  AND token = '+Jz4fI2WHzyyUkFyXjSTTdRQcFAmxJ+Wmngs/72XBBc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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