Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73c7decdc5f2e69081695be09b7d5695fede140a547c53f814f2bec4ad74222e' 
  AND token = 'wCV4OeUXEyQAlaZfeJrOxOdIlo8/L0Tz7fLeSVe/lfw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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