Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96b414acf4acfa7b30301cdd02347f40de798b6cca19aeb5dd651c16da57d33e' 
  AND token = 'KKcPEBg9qOennewOb8wG0cw2v+7K4tl9JnfCAGXeQ2E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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