Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd23a0e694f8a8a0616b58ddb70fc2c5fc99db24484ff3f511d2ab9cd26e8c85' 
  AND token = 'gM4aVZJP5iqtF9aLzQRSURJyC68UmQb1nERS/cAN8QU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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