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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d13ed56a8461fb2c66c0c215b108c0b6bf5ebc7658ae873fccff8bef3bb29ee' 
  AND token = 'DxmXlVvBzagZmkTxO6uZrVc2C7Ym7ITv86axHMByeGc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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