Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7fc6e1c954c2430801b80d979002a02e701547e661c895b9ac814e957e6357f3' 
  AND token = 'ECFkBbubyuVYF15Dx+yoHPqxRiTPkzVuZ4uzsCo4cEw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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