Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97181fa27ef552e1bf7a93bb2f8313e486ba52c3e3215fc52feae3d7f281604c' 
  AND token = '/31xCfEd99E6yCh+snSmTboOQ3ovSWzUc92LdJ/1QWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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