Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d64543ed0aa523a500cbde653cb454ea50138f5996d182dd4919d135c3490b3' 
  AND token = 'qhZPtw4bZ4g6xJiP1jEplVXPqu1p0pLlYx52BAuj0ks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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