Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59c94eb270e86de8fde6f33c5a98dd924dd3bb60415d3668c6189dffb4565c06' 
  AND token = 'aOB7dK/j3uw+onWs+2+GN9DCqnmNPek3fe287ECGQeE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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