Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c00d5a20cb11adcebfe9023cba4fb50720c3ca0c4b8aa627f34394e254c0e1ab' 
  AND token = '7CE19Hnn2y9jtP8gmUfvpWJHqJQ6VBRdqgMgDUXQJGA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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