Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa23f4354e0c2538246dd147caf5e0010d66e224f480d5557f9970ef11f32029' 
  AND token = 'lRlbibT5Eud6cGyU1wRXV44ooe9Xp/0TfPo2DBS9HXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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