Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '650315db892933193d2f8639442e728d72f4525ae3952804dcbdae6a89acd275' 
  AND token = 'loaONS4Tl1tmnEBZ0JfWHSaqtvQcqXf4C+HeU2a3wPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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