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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cb9b41a3a8cf4c61bc7a9c6a583375f34af5c4fe945f00b06ae2f1d17a9c054' 
  AND token = 'nsZ7gqk98qRuuVYVxvjX7m9cpUrl4hqbrQPMOrvZy1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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