Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '113b39e135ca918b6cea688907df6d28cd5c2f98c4564e6f4eb0ce5f340b5b69' 
  AND token = 'K1iMV5KJxWTlcj4LP8OzyR1lyFXewdKIXnX4xB6kF3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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