Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9063aea3c61ebe7a8721dca6dbad51b8af7ab32b219ce7b7790e8c2775fa7f58' 
  AND token = 'FzG9ouSuAVipllDux9pPSJdSH7bdsEGuBEN1gJQ8GVQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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