Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28384aee0cadfbe897ab5434babd5e90d05530b4a005d4f6a4ef5857a634d859' 
  AND token = 'yaYBiNDz9nYtr5fr4opC/c6XE2pKqNgNP1vV2pV8TgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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