Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae203acdb6456c57a79ebbc8cdefbd72adfcd4960ad821a5da4847f11f48f48b' 
  AND token = 'XVnpcyDtXuKSitNI+0kJ2Vv6t4g12U8oh0hzS8mx8Jo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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