Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e9411d19ec8003b1ab141e64019c60474a213890809ef5ad907179e8ce044f6' 
  AND token = 'Fl9ZEBRTwmeyXrIOM/VPoNDBgZBFfmUFUgsW8y3lQvk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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