Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '648f0730c205c8cf5867283464f789c7ca4fd0afbb2ec508ff4b1d864325cd99' 
  AND token = 'etoLxS/pjj5bm0D49bjEQQ1J+h4VpkgpSDYQ5+R7rpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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