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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cea1c45a56a0515af3f244d07fa85ce9a6854d0ae4f5fa48a89adcc2ed11ed60' 
  AND token = 'IIizWAQCqfspSTAISo0ixsm81yERMBb3uZFz/m93/O8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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