Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f672d23401ce86cf29c97a395446eb6469eb06a3397e000a75016fb014a4b3e5' 
  AND token = 'X6YB1PXvrYqnpNGz6UCJJ20oApYD2VJncotRJnoOaWE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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