Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5167f6589446c43ff1c90cf80db882d92ee4e6963454e83a437394def64fdb7a' 
  AND token = 'QjnZWrJr7ff+yfawRQWysHPlsXDITa6Gr4Y+545bX8g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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