Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1adf620176cf2df6b2d870195ab2ef4adf4c16652a619b1b9367517a0ba8a43c' 
  AND token = 'LLcZR0AUwUyK+e+fSit/M+daEE0GCAUG/ruMtlFyx98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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