Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80273588547b538ce2afd9daa9a16c0b4d3d8370d221cc69f01f4e9f121d50d4' 
  AND token = 'jB9fHO4fpdZw5muvNck9qLV9KiaNHaWYVPV+8tgkono=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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