Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2a336c4fe8cec275221ad58206428fadc0aa39126f8cfbb35d258de47cc8c0ae' 
  AND token = '7IDi4YKUPivC59Un3RRCDPt3X++2vPIuLGIbhWwOhPE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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