Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04946705be8ce340c3459976b6cfb4765e1b1a16754e4182bdfb01cfa4f6ab64' 
  AND token = '0jKYqi33zLePEal7baxAB8FzSaQ8ozWu7sKFVsHoXMg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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