Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dae37d5aa960333b021402b8c25c049f1f99c01d4c456e13b4470c4a0ddeac8f' 
  AND token = 'PWOq2d9sQuDIW2S/CGDM4HGze74bjUQm5z22hD5vPcI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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