Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cc9275cde623faca646751c227ba6363461a5955bfa41380a5c961a9ddc270e' 
  AND token = 'NjKjvC9/NpiAJFJxa28SnfnIl1J3sxURoOHVe4h3O70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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