Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '786ac663f8b94db966219fe8d789a13b3cd151732f844ee821f51a91b43dba51' 
  AND token = 'IQxT0Rng/a81nUH7etB66d9P0TgQM/ZqM1Q7EtqDg2o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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