Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2a2acfb215a45e17778717a10e76a9fb1c6d194972c9d48a34d46d0023887ec' 
  AND token = 'sJEjacwgh4WqdgE2EHm2ZFAR7S4AhgQthSXpWZQmkYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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