Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e56f1c8711bb41c33916e52b7b3b38e984b87f7c92eff124a68cb9bac824370a' 
  AND token = 'y0no4TbII1j/pZWXlpEGmwEhqgVA6sjrs1G/sIDpd8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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