Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae6605af30f699c24c68e16bd0dd472c90f620de0d3d5ce2055ae497e2fee774' 
  AND token = 'O3LLseZ+LHmd31TXk4vQAQV2i33L+/Nyvri3Zvbd8aI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

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