Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54eca95a3bf4575a5de2aafaf503527f89902a6297550058d2550d2df47b2761' 
  AND token = 'Jo4RUeY6UuHuD6BjqezwK+15X1AvI8CYWa0jRrM6jZ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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