Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f995147e1cab1b49ddde64d771949d8ad1ca5ef09f534ba1f78877091237505d' 
  AND token = 'xzFNonsF/miKKuvzqxWugc0+PuKvCbWbQEgdfdHQnBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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