Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c28c1f0d15580b9e5eb161bffdacda7cbbd3f91c9d6c1355e0530be6e1a3cfe7' 
  AND token = 'TL9WKqxuQADh9HpoDmqjW1jh93qdBhYZqivhKUrsKcI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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