Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ed4a0a7ca031c1c5221a77a3abeeb2f96a69350464d0156b23714045ad898d3' 
  AND token = 'YuHZI69fhWe/bmAEY9s2Y1nKYpwsXHaOvd/DQK/2cLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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