Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cab07e313690b9ec4f548da9495bd2114c56725e82e2ceb8e038eee9f463de6' 
  AND token = '1y6jtMAwhn+obI/LNKV+7c/rSheVIUCDWjN2LvEtg2o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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