Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0c41c97963c9fc92f268108c9821d9a1a449716e69728713a8e915587717696' 
  AND token = 'Uo04/GYJCmXg8gsQYge2IKxjuueoa9Lbe5FQeKPkE60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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