SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '484728e068146f50631c933315ec6d8f28d18a82f6fd3c61b0a78431d9a88595' 
  AND token = 'HyWxbR3sQKuifUPM7OdwVhgGP4FtF1oICGBbpX/+ujE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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