Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f602f1a23991daf89055f26b1322a2e75b5fd115bb26416b0d03a33ddb65902a' 
  AND token = 'SuM3N2m1eGOXzuGE3fmP/uc8E7WMqrh0ea3zsJXJ4s8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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