Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2a4e224c0a958a518d1a9b8a7b537249951f51ab14c69d45b98102c71189d59' 
  AND token = '4yCLC7QKgd/jjVW6xXE0ViWbpS5YqFLI0331VUdgsgw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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