Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce3da974636c84f0b9658d8ff2a83da673e906b25c78bd9760a0376e39551d92' 
  AND token = 'lUFcEv8KAItQ3lC1UX7TitpST0KjGyEF7BQTHG6vzD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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