Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3426ed6b7f3c1620c9767f89ff8e6ae8f967bc7ded139a3c3a9f933c465e2f5' 
  AND token = '9z1g73jjBjy3rX5aDmjeYgPPKsAjT1g2xs5fmdaWyG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}