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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17a2e9b4b8213731c8f10a68a4ccde150d4c5f9621ab36449384062dbbdcc963' 
  AND token = 'AYC6dprdqfAH3xfI7MVry48Yj3hXHhUhqqVfkAIgLz8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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