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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e98c6149c882963779ece7dae37f2c864d70f9b17e552c714cc0bd885ad69bae' 
  AND token = 'EEnco2+CoE/gkM3X6mVfNx1vJTnlM8h+zO1NZsoBYbU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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