Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32135db0b5bbd3a98c872957c824c017f09bf82685b4aee9325a96a74c72708a' 
  AND token = '2MCx+y2/eKO+ZhF0i7nrew06GkIPZNtlWjdja3no1Xs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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