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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25290c78225d09af8338f97d31cbf6071d73353532c8b1edf6f8958878127b05' 
  AND token = '9kvzglkBAfDoOx89mRrwBHXueucbChHbGfZ8JMr36so=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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