Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1af8e55e9dc2b65020b086d1136f5f3afabeaaff1a65c513091725ec05b906b' 
  AND token = 'YLvlOjb2rKVbTEby4axouUi8fcBbIVdDoh50qgZvTYw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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