Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc960f1d4f8aeac8800b0f7defdd7e112c354adab5cf224326e4a67b53ad5c9d' 
  AND token = 'rm7IqDgXGENY8iXvw42KQNjmlYHfDxhi7laET9aBqn4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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