Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '042f2406c2e36e069023c6d8aeea281d27fcda7b848eabf53f909682776ec2e4' 
  AND token = 'T8gYlqtkugIdeSDZgA3hGlGszgytFZv1osaw0hUVgpA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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