Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23aeba3768d196ee94c082cd9041ba3b9b6cfbf3a71bd66d3a33bf2e157936f9' 
  AND token = 'L5QfLKbvumSdJi1N8MhS1nKsg3W/w4QuVN/+FL/GyOU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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