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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9af7f059a99583fc895cc6989ac6663e4a4e0bdf1ae9c5f1ae9c698f6be4877a' 
  AND token = 'uAa0noV82OUCzmNMgb1wW/0vau4dEAOx6+Jg0QQMqJk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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