Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c2edebccb4890dc52a1516ec9dc9c13d8bd8962600f1e2069410c1778c46539' 
  AND token = 'sdmE6DGk5rBOZ/zh4inoYjT/nZaK9jk9uCIgWcVrIec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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