Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6219d96a700707431727e62aae0331e2fe6167bfbd7a1f5eccb1775f33823828' 
  AND token = 'M86jSJ5UQfC5vjheOcfHSiWXq3LCX3oHv93EJtPRkkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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