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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1369b6b900002fd714d3bbf96c442c72cafa0c99abec45905d65c79ecaa63e7c' 
  AND token = 'a6fYYGk2vJyOq6o5gZ9/053g8q8V/psX6rb98DRQ1QU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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