Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '72cfb2c2435d352c6930f25c046eaa54115e9b222cf3d79ba18e7142e562508e' 
  AND token = 'n+tG9ion2JIQgr93kh541PKt2X+Jw98s/6z2NZgyJ/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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