Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '410ad01c2e6757ce49fdf6c2a370e7f2643d1b0bd535cd2ea053f62e4ba5bcc4' 
  AND token = 'bZGI1W7yVsH97QjLsBUIiM72FATFn4cnh8Fcq9+HKXA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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