Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80988bb81ed5e23527c4f2a6ea2f7019c03db5e6564c238820880d563e01f5d0' 
  AND token = 'EAMs8Ed4Z31HAfutMjgYywdB+J6T53VCNdS94Fxo3Ts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}