Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8cc172e926e5afe0e3153d76b42765a4469e27fa99e0e07251dc6b221c6ed0c1' 
  AND token = '+vKPbX4NJbU+VitHHWZdr/XlnAO0de/Vc87b2fXHoYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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