Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca345a03e167d1609c29a8834e0924906cfa59cd2fabfa4f2d347751242932b4' 
  AND token = '8R4Nuxx4cO0713wWEky7IrhJ8WiLGk4E7viTG41mxlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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