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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92c044ec1ed116a6c3f47d7a1984de0c3986308e2a82fb7257db7ed3b58b54b8' 
  AND token = 'xaoF+puOwJWvR4P6IrP7J9zjc+tvd43+cJ02Od4cnro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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