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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59e27cba5af315960fafb963aa5b89481e0c44ca0ab9111be22f25578fde5176' 
  AND token = 'k8prXd6X3OmDxF80FGxOdvI2b3rxiwcx0j197P10y6g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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