Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0987ae01ca995366bd0880be81f1ad9625a1a99d41efeaf1268da386c088288' 
  AND token = 'W7e8qVWEQMMKv1yYL0JrprsLQKC5XSjLAu87g9u0rMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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