Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ccda566af9aca538bc9bcff26af229c820442f78e1a1770b11ed2a790b9fca1' 
  AND token = 'pr1k74b+TH4DGuuN2xUx1Mz7zhGu1GrmkGEfL/UbTX0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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