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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d5907b977938b08a0c3b6f93db96294deaecefd95e9b1992bf8aa47ffc0a432' 
  AND token = '2aZszWxxHLwXzHePwlNOgMR0m0XgFV2iWz0mQJ6Q7cY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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