Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9488d270b0ea8ed4b6c958c81953594ee8caf567112043ba54c98bbca05ca420' 
  AND token = 'YVzeyffKJiGT09PSk2aE52zzqjO+pVQNqyaRmQ2eYOc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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