Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ea894f7dda4b22fdca357594accacae813e55c04ed1aeeb889af81114881fee' 
  AND token = 'zQhzKCRvnoqul/A4D5RmN4WjySkXfAsy1yoOlkQ/+TE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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