Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd87720f70c790fd5320d71913b1bdddde7a17ce8d3ce2322b319f1250368c085' 
  AND token = 'f3qS+gMYmcgPAN/b2+L9buhBk+oTo8AT4667QrseA2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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