Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10f8067589af2cc8bae0eefdf1768439c91fdcfa57d3202dd180bcc90adbd8ec' 
  AND token = 'aC/eoESM+qrrBS22G4+ZmFVhTUyIN3RnzAAeeKF8elA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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