Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25959f0d6715bc88c0a2f8917a79ed8f6bc483bed1904aec3caf915d9f006cc3' 
  AND token = 'mtbpUp+0rrp98a1YbHqQEz8Q++h95F6ihFQe9MIHlNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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