Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe5613cc0e9c2650dbdcffe26c92e2748fa3d4c62dc1301ef27962c0d7253104' 
  AND token = 'i76AYfbvRzEoPBKj6xC/riWeYfxF7TibhbON9j9rhyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}