Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4aa950811f319e2b40c19f3301507417d3f93ab6c19dad5ebd46990044687e48' 
  AND token = 'ouZR6S+/ro8PjM39aiht+0GZBphm7+XTpjYzcrzo7oM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

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