Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '20139c23d801b1f94d98a1731dcb1f8db106e68b0ef45a607763b5ae48f96eb8' 
  AND token = 'dREWnAlmykfStF63pbLxSKaxugic/dqlyXSdOKJinw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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