Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'beabbb8b58fc7a5fb541bc10c023631a699f3710438ca6d49f5d6f60a09db6e1' 
  AND token = '4Jf/p0iQWTWmelcbOVrAqWysH129kOET1egELHtC0p0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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