Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57eaabea5c9f9ef7faa161d93426fdec90dd59586eb5b8479f1c17fd6c24942c' 
  AND token = 'dHhtoyNjGwvJJN09ALSTOentxOc6Gw+MkpUGOsDfH9s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}