Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '692647d90c3923dd9487578a1885a1a412a03dee85d24104fdaa5012a4a02e4e' 
  AND token = 'QBYHjpC1rZKNDeujpA0ebWl7Y95wwNnxwZtFMRbgoj8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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