Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '420935d92cb4f3b162f3503af3a84b06acf12ca433b57186d772d6f6eb920a44' 
  AND token = 'LG8X0/SLZc09tasDHsLmEwp++MHb8uCLsCRgjE7eXpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00730

JSON explain

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