Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd002884228144c806a8407bdd71915f0a45100046b6b7743d0d1585f5e57eff3' 
  AND token = '7TsuY5xsFRAd6k3TW9Xl+boLKUPwtFFbdwFksNXmoss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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