Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daa2e48ef2991b5dea0c82e8edce67886dc229e03df06ce19620df43bd095f43' 
  AND token = 'qxY6bLosG3PNBYNpDL9eLgXKRqABwlFxHj6So9Zp+Xg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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