Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7caed9b48d9e05dae1fac09ca3bce81ebfd68db605c1dfa935fc03d16187ac98' 
  AND token = 'dZwYy4Cc56QaEe1RSK7PCL6png9SzMT+f8f1GWH7iuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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