Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac32d3ffe8454509c55173780e90f5631c97d32ebb572fd9065c70cd04cbecfc' 
  AND token = '7PnnWmKBddsj6uZcjdKxuNziWPAWUu3bhgIJRIuc6oc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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