Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e55414c878e530fb703229209250cf2f939fcd6f39bd5f3c7c21f1864d0f4d4' 
  AND token = 'cnWFaj037cShsfU+fYBBZ4zH0+MdUWvY4IMK2ckru6w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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