Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2742208c53a0dc2fdcc04a8af7c3778a704656c701aba946d761a78f25423252' 
  AND token = 'gx5FqaAIygCqhRd6DDzK0dmHmhNeZAa/rI5RBQCjs1E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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