Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c33f58d0011bf9f4c0c31f9b32f9628ffb3061ce31beca2dd57e063c3096949a' 
  AND token = 'Kp0FWyhrxOyRswT+HoMPGkLv5fFc9luVXZToNd8J5OY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00066

JSON explain

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