Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5cf4ff02be25ade60d67da30f3ed1a98f5825743343d425296216d82bbb7d47' 
  AND token = 'bDEjA24GJ/bXh4cL8BCxgLinXWmn4awCACUYt91/APw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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