Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '107672d836853621f0805dc878c40a487439dc3e0e34d512c33c40f5184601f4' 
  AND token = 'qTn4pozIF8STek/MTtQT81/uWIediJpLwz3ikayxKiQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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