Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '264fe502d348c6baedd0f9fe4ec022f76c9a6210bfaac791a14defc2b4071f8e' 
  AND token = '5iJ7yeR60npJC0jcCSmr+71Rz1m7WRN+E8JZBQcOGPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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