Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32ed584b0d4a7ade3cb6d97a3ffb6470dc418aa8b3d9fb82cddae2daaebbcfff' 
  AND token = 'AllBjZNCDF3yXxN/K2gbLMxfokpgpa8KeryUnmpS37Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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