Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc06bb6d2abae1b1fc46806712cd13b74795119dbd4a9dd11582ab61158f6b80' 
  AND token = 'j1Go6H/YdYXDVYRnLso1JdbsXqwpI9t/glVoR+royQ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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