Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f61447bded122830d9d734d05c725f02c677499288343bc0523cb1e7a77cb47f' 
  AND token = 'MSPgA6GeHYKawH66WoJe2W39WwG6/NsA3WMdhr7tRNc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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