Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0aa995c353c9fcc82879d21f0b553656557927191358c1ba9c270155f96ee94c' 
  AND token = 'vwh1Zqo0UzYLh8RHLtt4pM+8zf0/+EGM7YvRqF7fMiA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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