Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd230ef12f254258807bad2192f7d627f55e9661496d316b8aed8cc965f4286ed' 
  AND token = 'OVnleMS+/MiIk2AiQT3Bc4OT6KbfdG4CpXlJrMTqj/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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