Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e67469f5b711f85361ac7fb5962427a759f03a8802917e184d9699e9fc1b219c' 
  AND token = 'R7Qto8qgobk5suTCGPMUUmvYROsW7wbOdJshqtWb/8Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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