Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb26dcc68a06f559b508a3f7cca1be74869eaf5159b2554fcc6cd75e7bfe700e' 
  AND token = '2xH2x+DTwA7pzjPJUni1d3MG3wf+tfkZlNf/W/57gTA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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