Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7339d3f0b47e1f287b3c50252305ba03a6f372d6601b27869e4d809359358719' 
  AND token = '2xzIvyYUA2ObDn06zquT9rpbWs68Aap5HBhRO6jzUNs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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