Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8d5f7260342d1a537d5ec02bba074b83c5c4309f88988a77657c6912ec51be9a' 
  AND token = 'mTn3QYKpPP/JfkhbXOSVRDTaX4hXE8Ucd/ncbSRIGPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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