Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8aff3d0d5a60ee49412c76426b030a7db5daec6b3b22027557999561d4f9756' 
  AND token = 'X1w6ifD9bU4C7WvYJbTIXH8O4xWubpJoCeDNPLR0y4c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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