Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf8e08826f5761c86ff2cfff0e69231f13a9ae657b4b74122a8a0d2a05fe69bc' 
  AND token = '3sg3FVOwOAyhtvz39Gwz0oOI6ZfNewUU35gJy5pCemg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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