Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd77d6e447f4f5619b9849abb6080eaa08dcce1568616580f9a27aa767473f41a' 
  AND token = 'DlHHdYWrKSKaqhhtHUMYGPKnAaED6UhC92uwFTaWXIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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