Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73410c7a8f90f774fbc9405b33ac768a546826c635b269bac669fedd8f1cbc4e' 
  AND token = '1BgP0S3it8AcqKqdAdruDSvwgGBVHysFyJgre13XG4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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