Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ca98981220a3b982e6ffdecc909400e273f53b9e64ad03db531a193b6cb5138' 
  AND token = 'Tfjxq6wXEzT8lWZpigq4TDnRCsGX9ildkyvQdtXb5yE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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