Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53006f0b3a8e2c976926a46beeab47011dccc27b645112a992562e64288fe815' 
  AND token = 'buCG4/Kq1x0uh79pseSaBIH7J+iElVllVkr3CLJhbK8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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