SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'cf8bac1ccb599f5a79964aba9f07375a22aaeb8bb7b2147ddafcd5fa5532db69' 
  AND token = 'XrgIPkWCPnYvjVr4Kp/DXav0RtC/Q+BdhdieQumRiEk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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