Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '29eca3b3e9666172c9bd394167dbd14c8f5804b5d8d0e072fe44b2b40868fa90' 
  AND token = 'FV6p8l44wuFS8IKMbf43HG6wVSA/I9oyhM5Pxa3n++c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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