Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25568b9ae16da85e258e6d8ed81679c343ccde4dea9d7414d57d1c18fc85594c' 
  AND token = 'IE+RcGHiHdJYu+fMdUMcVGHumQS01i4sEOPp77Pfi0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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