Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c5a5dea3088c07da10cc5c15cbc09582123540f76dc7065a85a65851675dac30' 
  AND token = 'nzzirvucbhlxC/muq4XEn0rDk9NXOGdDwWYMvCIU6hE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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