Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd9f7ba8ee541d0ecbf01a3adbf73f2ccc35739093d03ff13cd0e7e154939e98' 
  AND token = 'W73yvjiq+3BA7gQS9/le36sMPiEd7t5YppSlGabIdRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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