Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e3e301665e835bd9e3d4c920788cb12e98804bd7daf7d19798812daff3c19ff' 
  AND token = 'IlNqoKkhubG5kSIsHOJUgtDE+1EUWXkQH0WeUR2k2W4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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