Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '798984f9107301403f42265c862f709299aff05c08125cb73338160532110143' 
  AND token = '0A4L054qhBfMNjtKC9r3V8gr1Y3r0CWFrFvOfvmWRAw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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