Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '913cd4ef3c5dc3cc3f992e97519a6b2ea5023026564f1198a2ceee77abf16524' 
  AND token = '47AIoqQF/DBCeaCj4o2IXj1q3nQ1nQEoJF//5KxRyRk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00126

JSON explain

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