Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95e3df4bca5dbeaef03e8544fa7a5d1b4bb65d7a2d9ab6510612cabc5b59c9ee' 
  AND token = '2Gucd2jJ9GqL6oPhXPuX/easI1XqXzkkhs9xbyiI684=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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