Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db651bfd05cbcac090debaf1bfa145f212832d95df39b85a1304f5e25262e2b9' 
  AND token = 'zQbsvPrHqnNKyJ3VMOl0a5oYWeqzinNRck2p7pt06vw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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