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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2955f1460c323d0a357e71ec652057385b06ea2bed95de16e3dc706030aa2f94' 
  AND token = 'beX/oszbYJq/oEpJqGuwzSbblP2+kJ3VpJHHmL9bE+g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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