Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd2e73e3adf1d3196a16f81f2e4f4930420404f04a35df9c0fd07fa93d1029d10' 
  AND token = '86nDg4/d/MRxUFZTGQ70+HkdMtLNa7QgWGFysgZqLuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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