Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93658db2e77a745bd9a01cad8bf57e3be49011a586a0b539b7cd33ffe1e59ff6' 
  AND token = 'LCVQKUqyyDu476TG0ty1tyJVzEVc9afmeChZxRhNaDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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