Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4416fdd25ab68cfa88db2c3da833d412fd234960d0e90ad49e9afa118e07ab83' 
  AND token = 'wnCoh2kRcRG1yehpYEzX5J8dsTz93Hg0JOyW9TI1KQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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