Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bbd131fd54bbc6d2ca22403befda15456ab26a0cb951acf7cdba98947449f1a' 
  AND token = 'M8HQS7bodo5oG+kDhhGzIEOqpNEmYE8Py0GHl7bvUmE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}