Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62bce2e20127a44b3aa28e0c347b6948e952d32522bd5eb5b5000db27d50cdfb' 
  AND token = 'sfJNky40NvcUVnaniyfGBFENANMP52cS5YKhBJYJuxY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}