Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1aae8c72939ba36fe031d1a7256642ea4a3b973bd3a6f9431a2cb0eb6e9dda1e' 
  AND token = 'd69L1EtwBhr2m9CItS9ImgDV0bingDNplfK+LA4CgHM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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