Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00c66f7e415668ab82749ffa8050d7184887cdc70d3f50db7198347dbd5a5fa9' 
  AND token = 'Zx7WnanWzwR7fgT5plPZQPPhEdHIFy1VpUWjn1Lo1Rw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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