Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b53417abd5d5027587249cb85d9b9226373a6bd1c918853fb89adba24c2224e' 
  AND token = 'HIZFpFfvxvjopEDjjIfA5BOxOC1N1hqme85Yf9EhK1Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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