Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80795580584c540ff5d6ab1d769d4a509c7d9190c42996802fd0e888e4f95bc5' 
  AND token = 'J90/cux+OqjQzD5xTIrKKL4WNKycRHCGlxJ3O1ECgLU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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