Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a4db5ec1bbac2acec1347d9fbaad25435f8eb3e43059545a31b5394251e5361' 
  AND token = 'kk2iYK8DCiLHXPX29myZBap9VPlrtdWaAFamrt8qjL8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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