Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e252af8d6563ea19abf26aaefeef39062883acaafd253ccd011f690aa4bc37d' 
  AND token = 'TgYLWnMGt6en/7qAe8U6WzBRVOD3Rud896d2AkNbigI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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