Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54a204e05ed91f2451408c3e23e959269b342d48ca25848151dd03daa8470a92' 
  AND token = 'i0clMbY/TQsCqsjABRG2b2xgons/BejQ4nmqvZ3iVIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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