Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a31ff5cb304f0ee35ea32f6c06167c11b220de4b78e9473d3be19fd8f30f1c06' 
  AND token = '7aX/3r3228tktDrrT85PXPKTX48LV4ZObOw1BkPbZHA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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