Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce6bf25b71cc3d59977a9d620752543b568241ac9bb82fd43c371b4c55f94e7a' 
  AND token = 'yTHA+jD21HUvmciUoIv6QsdfZ6ScfLhP4INauBhMZio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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