Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0485181e50c5162fe5390dc4fa053877515f0dfa0154cc05e225e6fdb50943d' 
  AND token = 'h7WCdfRG99Bal8vSfFkyW5OJ4QHxIAwWXlnKxB04hIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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