Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '038d08e53c4f6bc6dd6f102c659785357217ec9dabcc48a4d0440d6b0f9863cf' 
  AND token = 'wnVs0hAGw9XhPKh4+lytQxDNoNSlyTQU8yVI/3ftJIE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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