Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd50100097c9158f6c46f5429a0b096f9cb7b602ac6d9a053d27913de2f3cd511' 
  AND token = 'XpSbNawOHcSfCznNul5n///c77J9ydKoEiNvxtobJlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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