Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '953c418b3859492372711e7ebd67d652ba791db6c8011db78ae5244c0f2bd51c' 
  AND token = 'unOk00Cyu8FJIvK9MUhMvPUSfyg1eKvOkiyXCKfmvhc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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