Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0caea262492caa6ddcb2a79b5569c8fb4acdc5813bd5656489c749c791efde59' 
  AND token = '0m0IGJiP7+pzWZgQcHR0au0HrSrsmYPz7gZsv9ezURA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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