Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec0ab85128360c518bf9a63a357459becaefa5f8d72a085c4db17a58c497f25b' 
  AND token = 'YEItU8PNxJ6N0ilTb8teb2csJ9I13kw/7SG+145Wdug=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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