Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '410ea978789670948b6107c45d1f8baf07620377f93bfeca80cb892d2905bad2' 
  AND token = 'V/1nMTAyMlWDgLYUPzlm083lxpX9HfwCNHjmkRm3rrU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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