Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26b4293b971a9e2c506604294d19a5a9cf791e909ac05117f9a37737d715256e' 
  AND token = 'yuFJW07tM/NzkpzF1JKfci7WeXhmc6c+S0vxWOYH9TU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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