Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ee0b495ee846e3c7c991c752c1cca5e0dd31f8ef856cf6d12be3faf8138cfc5' 
  AND token = 'J5oHMGRLyAiS9a3XiOQ8GscVAYld/6urbLHThl/QQVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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