Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '70a98aeb78b38f8cdccd83d61d0fc24b584d9cb9e46e9c20fbaa6c23474e5436' 
  AND token = 'GMP43uaoPqSQD77+HWYHqah30tE4GlccmNfpeipYR7c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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