Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1daed75d79bbe52315835f763e42827ea61c23ccdc051fc3ca6330615c9ced28' 
  AND token = 'Mxsgc9Ok4znqhGtcVnCOSdQlBlNr7hKL6hH35zxAwus=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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