Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '246f13c46f53bbe5eb234633e95f6dcbf7374aa48f32209f4776841fe3a308c0' 
  AND token = 'L8H0eb2ZGD/OZegI0ffP5UMxMSNZB82Wq2sTw21r0eI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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