Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6037aec14cb44623dd9e202f455f4ceda6de4da13a3353f8fe780d6d0d97755a' 
  AND token = 'voDXv3e81nCRpgY1OmKvw92aI2ROpj9X2mMLwg+o+RE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00069

JSON explain

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