Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dbf192d8a18c08db16bbc86cc5615cd5995fb9f5f97340b7f0e8dbf7156c853c' 
  AND token = 'qNoWli9Puu9SxARP+JCIcJCTetVvEjt6phR4rpSCqgg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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