SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '65bcc100f73bdc842542484820931ad2797be91661556eab6ae6f4bbab5b4919' 
  AND token = 'owr82vC3EBjl5/y9kkTFO8Kh1JUjWIMgJ9EgoJcHhVQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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