Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bff0a6426b14d0f6742ea785f9bdc4cb649b053ab4c681fb79b58813eb384c16' 
  AND token = '9EDhG69hxUQr/rY8+tG0urCEXTHJ+dS0bPM75uJZ85I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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