Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c013fdcc29ce62589d070b72967b49ad551bec669168e37bc14605b2a24d32a7' 
  AND token = 'CDNpRAgrSpLrzajuPV92wtiZA4ZkU/EnneW48YhiwIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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