Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3f7f624e38e131555b371445850ffa00d7d3ac94bcfad1952d7a85b16ea88749' 
  AND token = 'XyXcbA3weQgu2wDdntvsQt+C2SsGSTPfC1+hFBTS3wg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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