Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06bcc7184629874fe10e85cc98f59f6c82671750cd45afcdf6ad1fb9f14fb698' 
  AND token = 'RqgX7wiyEkCP8/8g5hdi2OWlB8R5GPe3ESJYJGo1gYo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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