Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '474dac53f553991c1c0ce5c3ef3e6df387919c3d7615da40f4a3ac421dd08f03' 
  AND token = '2FEASaAXmMh4/r0uuuwW3N7K5IYvZXutxdzq0iRJtRI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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