Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4efb28b51d29d60ff42eeff9cb321ce5f016842bfcf8a1d5b7cb06e214fd64cd' 
  AND token = 'bHNShrmfgTSRCgf2GhfAF9Ml/qpvrJ2YQuPZ3opEK+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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