Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88318885efc32eff42392ceb7884b14699db9a28b7946cfd670aeedab286ac8d' 
  AND token = 'DXaIGbSNX+n9MwYfVCGAfntR3XABpWtsPGJeQ7YrnHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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