Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10935803e2a8e3b315d4b3e2011658df6bae442ed4e1f787a682d81ae6aacb25' 
  AND token = 'X4U76iuxEGDW9t0GAKMMWtPirYRbveTasVWbAWLSk/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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