Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2aa88471b41a1f610a377c8d77810908c14e6fab9924a897497f93ea0ab56f1' 
  AND token = 'ApJFdeTqkpQPml2AesPbjZF6jc54IWSd/r6Ejf/ZjtQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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