Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '469ebde3d98221a6809ffe5d85c9f278b4875dc6fac6d7470016aefcc913ff0c' 
  AND token = '9y8n3OJ06nRQR/EKtCNYZnkGUYQNfjUU36xCgssvmmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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