Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c58c7d6d0e1bec7997513b37ceae2f59bbc8fec830d1d855da8cb78f9519633' 
  AND token = 'nYG/TpjTlPk5McjxDik+BHHKj6W5U2OzO/YW/0/ZYOk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}