Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cad2ce19a851cf6e20ba8b955c63128454ba66ac675e37959541b75df02f845b' 
  AND token = 'WzKWL1tVzM51gnNettu3LtNtnkLAxCbsskm9rfJwOLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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