Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8aa81bf7a5d46a8f078f80cc22eb3f93dbd59569932dfa4d3bcd2dae19563543' 
  AND token = 'GygdXXQ62Ce8nM+1uECnlYQrlt2VKIBSMczN7HO8zlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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