Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93bd7698352dad6df8c8df6c477830e556d4a3b3e6e730c907ddbe561a76fd6c' 
  AND token = 'oVPwWK9nuZ5IXHCGJgA33mikch1gwPz69rGnAn6U9zs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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