Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '023453869c3f6f777cdd678e2758d64734fa6ad7f8d477b46184400e2de12449' 
  AND token = 'fxGgWfl2D7UmMVrItjpYB61sk8sGp0gXrGuiuvHkdWE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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