Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9e505e5a7fa76461c832e3ad9da78c38c17b03e7d4df91393c215650fba97210' 
  AND token = 'Ypdge/FqxgtpPcn5ZmQ5bmaXMlGR+SL9KmtaysrsLj0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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