Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92e8d875cfce0ff709c02bdbe61ced2c4c46cfabfbc129aba52cb8eacd60bfa9' 
  AND token = 'EzA+dSd2Tkh4lAYfQd9bgAhPUIpiPci8tZ0qgvhTG90=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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