Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '78445934e14e853bdc4de24687ee9d1915801ea719f9e64f48ec41dc97e3bea3' 
  AND token = 'ALmWrj3KMKqJWYIedI4DJKZaj41Sh3sfYRFjK2SghWQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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