Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22cfb1ecd8215abf5d26d72985846022b965b60b329e2042249eda2eaaf356e2' 
  AND token = 'kydeHZIa28kv4uuLSnqqG+Uzlax5TP/oZKPWjNy0kVE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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