Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3db7fb135c7d44a2729e3c75e5f71978cd8076ab1810de282c97baf8d03f00d2' 
  AND token = 'gzOrdys094MHUwa0cUNbq5fZt7PCSKWfF1m7T619rL0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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