Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5410a78d67483ddfb06ea6d46e6a449d18127871f059e36920e24221c5acdf08' 
  AND token = 'w3wmY3KYXOoYPsDVUJvF0sMs+YRhelHyK7c9/h3XEso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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