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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80ca4adf7c055f8d06dba20c821016ac550d57c8d3ab573d0184ef2bd6819059' 
  AND token = '2rPPatkG7/kAl9RNsxFWoor1KcU3ZdJKk08p3rMw7d4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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