Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ea381ec41a8755fc3a75f740326c983f900de282c3afe519e5117566ba79c7e' 
  AND token = 'Pdeio6FbYlg7j87glkdwWEkVbtdmUeE7QkA4OQ7ikcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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