SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2e26038db44f9df7e93624f4bf51a070fed16a43b3d1d0fe0148a52b45552b2a' 
  AND token = 'cuqGi9yYkEq/7RsPo8inZLDEtqD4MwPQkgz7mPrYBfM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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