Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7a1cca360c7955f3b39589b30a2b09a95dba64a5740ba57d55bc870d4e4f01e' 
  AND token = 'w61WOWxAXfjFRhSjUT5P9/NkJLtAlUC9VFVa1P1g43A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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