Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22a3727588fe72abf95a1ab558be5780a47ba328009e3a110f988213da5311ce' 
  AND token = '9ermN750+czAIUIBvBVFDGG34O0JRhuH3ku2VMoPCY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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