Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '559596b0b088c6ae3d8d2c832de4fb2a7167220372ad21d6c3545657f95f0356' 
  AND token = 'CCgLsSV3FeR97bwx3LOnRR9PFS7KG3y4RfeaqRXSMNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00135

JSON explain

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