Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49b72799b9c4d4ec9fc797f62b9f875519179be459177c6e242fb6a5cbaeebe9' 
  AND token = 'ECl8/xjyvBtlbaZuAw6nnUX/Aa9uodmDJcCRCJi/24M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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