Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33a83ea150587f7227aa1f9e4f5b102f673f506cd8a19e378ff432963fc6be0d' 
  AND token = '49EcqNNFcZBP8zqZPC6FEPN1qFTqWF5po6HCQayBpYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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