Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c1da95f9424eaaf822050fe018623288dba2a2866a81dc182005853f3cab1c5' 
  AND token = 'Ere6i7aRygRevXOuumrXl6Qllb0SQW9XGk1st2Hgn/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}