Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f436c300e5cd8bafe6fcb56fbb645799381a09918c3c0d89ecb33413c2a23551' 
  AND token = '4fuMDsCoXECjGEpaTd+0OmIBdAcpdqVIidXqib4cmRE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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