Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9b6329591060e54c1c6513e0add4561d1c0458d52070df071dbc123307005f2' 
  AND token = 'vfMxH0BxMWiIC7pmFE0GA5oHziYoi1qLDpge8cozkBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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