Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '15fc89b34f566b84db9685cb3fd5898ac48a30bc469c17a6ca0ab9a322176052' 
  AND token = 'EIQ8gZJTz5pzIaruppDN4ZDOtBeJgdacJHo+yuQj+7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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