Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d1538d36c8c3773aa5849cf44932b005a59c60dbf2f400df49fe85cc56135bd' 
  AND token = 'oEURFxOJ3rzk6gKHNgIEdY4PadelOOD9l7MzW0skHp0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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