Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8fbbd220b3d91abb96d9241df6ca570192ced5d628456383c4f1b3f30ac12c89' 
  AND token = 'V8C76cib6+aToz5zwhWPp3d00B6sxb/fL6hOuL2tfPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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