Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42beeb91c71847b227773e0adfdd810f42c892526f850460fc26bcef107a8216' 
  AND token = '8dswhMI4Jzh34ONTjEHYfZ5lhuunXoDX7SJgYrC6C5g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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