Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b77500e8e4412b1e2993be79f1223b334fbdc2022c3738ef62d04f79054e5e76' 
  AND token = 'D3gmoX63A/5oDDCJfHrVYAZ/opQfPgGE4LaG1fPdtWg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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