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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04e3fd5f05316890a6a37e204a649a60a5c2345e0f172068df5fb0a35a85786e' 
  AND token = '/WXAxzmfIaBoyXEFmFCy4A5Ej1yU+/PlEgOj/7ClFkM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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