Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f626a52b21aed93b2add382ea1c453d9a52098eb96acafded30341622cfbce07' 
  AND token = 'nVWnXuR7rgF5920ebmJ9SzgH30XPd5+G8n/m8kR6msA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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