Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc7a250206a00789bb34c255072384582443fd3fdcc8f89e692a0c5d9bdeca3f' 
  AND token = 'eR9dYEANkW7gpnyfO8vVfxxXts1YhHlRuoJZQNuRixc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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