Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90aadc4a7c47d776310cdc8941871bf460c1ff8d69e90be49a4c15b2d1af13ac' 
  AND token = 'IC9pHjkJKf67vax7MH/6oKK7KAQLXZ1UpM/pgAS4e5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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