Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ea4f6abcdc93cab21bc5a47ee47ca4a812625e9732b61dacc718401a89ad9d5' 
  AND token = 'KVK5nH25u0S20gE1zifYj/Qm7LlgIIUrY5wEXQqZuPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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