Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70e89566489fdbf34691c4a9ed185ea5f7db716589a355ee80a4a480fc40f52d' 
  AND token = 'nU7RR75E6f9nPD0Z8tb0BthXAE5/+XqOt09TaRWQGKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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